steve
Got hold of Sime for a Carrier card for…
Got hold of Sime for a Carrier card for a chiller. Machine down in a factory. Received the new card in express time machine and plant now up and running fantastic service form Sime
3 months ago
Full 12-month warranty
Available for dispatch immediately
We deliver worldwide
1. Email confirmation
You will get an email confirming that we have received your enquiry.
2. Dedicated Account Manager
One of our team will be in touch to confirm your part(s) specification and condition.
3. Your quote
You will receive a comprehensive quote tailored to your specific needs.
All orders are subject to product availability. See our T&Cs.
Ask our team
1. Email confirmation
You will get an email confirming that we have received your enquiry.
2. Dedicated Account Manager
One of our team will be in touch to confirm your part(s) specification and condition.
3. Your quote
You will receive a comprehensive quote tailored to your specific needs.
| Specification | Description |
|---|---|
| Part Number | 3TK2821-1CB30 |
| Alternative Part Number | 3TK28211CB30 |
| Manufacturer | Siemens |
| Category | General Automation |
| Weight | 0.200 kg |
| Height | 106.00 mm |
| Width | 28.00 mm |
| Depth | 124.00 mm |
| Commodity Code | 853649 |
| Part Description | The Siemens 3TK2821-1CB30 is a safety relay with relay enabling circuits (EC) operating at 24V. It is designed with a screw terminal for secure and reliable connections. |
| Short Description | Safety relay with relay enabling circuits (EC) 24V |
| Operating Temperature | -25 … +60 °C |
| Storage Temperature | -40 … +80 °C |
| Insulation Voltage | 300 V |
| Protection Class | IP40 for the casing, IP20 for the connection terminal |
| Resistance to Vibrations | 5 ... 500 Hz: 0,075 mm |
| Resistance to Shocks | 8g / 10 ms |
| Resistance to Surge Voltage | 4000 V |
| Safety Integrity Level (SIL) | SIL1 |
| Performance Level (PL) | d |
| Category | 3 |
| Hardware Fault Tolerance | 1 |
| Safety Device Type | Type A |
| Number of Sensor Inputs | 1 |
| Number of Outputs | 1 NC contact for reporting function, 3 NO contacts for safety-related instantaneous switching |
| Stop Category | 0 |
The Siemens safety relay is designed to ensure safety in industrial automation systems. It is used in emergency stop units and safety doors to prevent accidents and ensure the safe operation of machinery.
This safety relay operates at 24V AC/DC and has a width of 22.5mm. It features screw terminals and has an instantaneous enabling circuit of 3S. It is designed to be finger-safe and has an insulation voltage rated at 300V. It can operate in temperatures ranging from -25 to +60 degrees Celsius.
The Siemens safety relay has an enclosure protection class of IP40 and a terminal protection class of IP20. This means it is protected against solid objects over 1mm and is not protected against water.
Yes, the 3TK2821-1CB30 safety relay can be used as an expansion unit up to a maximum error safety integrity level (SIL) class of 3.
The Siemens safety relay weighs 0.200 kg and has dimensions of 106mm in height, 28mm in width, and 124mm in depth.
The commodity code for the Siemens safety relay is 853649.
This content has been produced using multiple sources. EU Automation takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.
All parts new or reconditioned are covered by EU Automation 12 month warranty
No hassle returns policy
Dedicated customer support team
We understand that credit is a necessary part of business and offer credit agreements on request, subject to status.
Payment optionsWe accept Bank transfers and the following methods of payment:
All transactions are handled securely by HSBC and HSBC Merchant Services. For more information, please visit our dedicated payments page.
Global supplier of quality automation and control components
Dispose of your old unit by exchanging it for a working part.
A comprehensive repair service for faulty equipment.
Discover how we do our part to keep your production lines moving.